CN101420432B - Implementing method, system and apparatus for IMS listening - Google Patents

Implementing method, system and apparatus for IMS listening Download PDF

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Publication number
CN101420432B
CN101420432B CN200810180539A CN200810180539A CN101420432B CN 101420432 B CN101420432 B CN 101420432B CN 200810180539 A CN200810180539 A CN 200810180539A CN 200810180539 A CN200810180539 A CN 200810180539A CN 101420432 B CN101420432 B CN 101420432B
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message
media
communication
call
content
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CN200810180539A
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CN101420432A (en
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冯毅
杨能武
林宏达
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华为技术有限公司
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Priority claimed from US12/628,416 external-priority patent/US8320363B2/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements or protocols for real-time communications
    • H04L65/10Signalling, control or architecture
    • H04L65/1003Signalling or session protocols
    • H04L65/1006SIP
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00Arrangements for monitoring or testing packet switching networks
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00Network architectures or network communication protocols for network security
    • H04L63/30Network architectures or network communication protocols for network security for supporting lawful interception, monitoring or retaining of communications or communication related information
    • H04L63/306Network architectures or network communication protocols for network security for supporting lawful interception, monitoring or retaining of communications or communication related information intercepting packet switched data communications, e.g. Web, Internet or IMS communications
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements or protocols for real-time communications
    • H04L65/10Signalling, control or architecture
    • H04L65/1013Network architectures, gateways, control or user entities
    • H04L65/1016IMS
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements or protocols for real-time communications
    • H04L65/10Signalling, control or architecture
    • H04L65/1013Network architectures, gateways, control or user entities
    • H04L65/102Gateways
    • H04L65/1023Media gateways
    • H04L65/103Media gateways in the network
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements or protocols for real-time communications
    • H04L65/60Media handling, encoding, streaming or conversion
    • H04L65/601Media manipulation, adaptation or conversion
    • H04L65/605Media manipulation, adaptation or conversion intermediate

Abstract

An embodiment of the invention discloses a method for realizing IMS monitoring, a system and a device thereof, wherein the method comprises the following steps: allocating a medium anchoring point for the communication sides; and duplicating the communication content when the communication sides do communication through the medium anchoring point for completing the monitoring to the communicationcontent. According to the invention, the monitoring to the communication content can be realized on the medium anchoring point and is not compulsorily realized by the existing medium access device, thereby realizing the centralized monitoring of medium on IMS and ensuring that the subscribers which are accessed into the IMS with various modes can realize centralized monitoring of medium on the IMS core. No requirement exists for the access side device, and furthermore expanded private interface is not required between the IMS core and the access side device.

Description

—种IMS监听的实现方法、系统及装置 - Implementation species listening IMS system and device

技术领域 FIELD

[0001] 本发明涉及通信技术领域,特别是涉及一种IMS监听的实现方法、系统及装置。 [0001] The present invention relates to communication technologies, and particularly relates to a method for implementing IMS monitor, system and apparatus.

背景技术 Background technique

[0002] IMS(IP Multimedia Subsystem,网际协议多媒体子系统)通过采用分组域为上层控制信令和媒体传输承载通道,并将SIP (Session Initial Protocol,会话初始协议)作为业务的控制协议,将业务控制与承载控制进行分离从而提供丰富的多媒体业务。 [0002] IMS (IP Multimedia Subsystem, an Internet Protocol Multimedia Subsystem) packet domain by using an upper layer control signaling and media transmission bearer channel, and SIP (Session Initial Protocol, Session Initiation Protocol) as the control protocol traffic, traffic separating control and bearer control to provide a rich multimedia services. 頂S是电信核心网的目标网络,在电信网中占据十分重要的位置,方便的融合移动和固定多种接入网络的集成能力,越来越多的获得电信设备制造商和运营商的支持。 S is the top destination network telecommunications core network, occupies a very important position in the telecommunications network, to facilitate the integration of multiple integration capabilities of mobile and fixed access networks, supported by a growing number of telecommunication equipment manufacturers and operators .

[0003] 合法监听为国家安全机构在法律的授权下,在通讯设备上设置特定的监听目标,并将特定的监听目标的会话事件信息和通讯内容通过专门的接口送到安全机构指定的监听中心。 [0003] lawful interception under the authority of the law, to set specific targets to listen in on communications equipment for the National Security Agency, and session events information and communication interception target specific content specified by the special connection to the central security agencies monitor . 监听中心根据这些信息可以复原被监听目标的通讯事件和通讯内容,达到监听的目的。 According to the information center can monitor communications events and recover the content of communications being monitored targets, achieve the purpose of listening. 在MS网络中也应该实现合法监听,MS监听是指通过核心网将被监听会话的媒体流锚定到MS Core (核心)控制的媒体面网元上,并对被监听会话的媒体流实施监听。 The MS should be implemented in the network lawful interception, MS listening session refers to the monitored media stream through the core network to the MS anchored Core (core) medium control plane network element, and the stream media session embodiment listener listens .

[0004] 现有技术中,通过在CSCF(CalI Session Control Function,呼叫会话控制功能实体)上确定会话的监听方式,由P-CSCF (代理CSCF)控制A-BGF (接入边界网关)复制媒体流,从而复制会话的通话内容,即MS用户的监听是在接入边界网关上实现的。 [0004] In the prior art, by the CSCF (CalI Session Control Function, call session control function entity) determines that a session on the monitor mode, the copy media P-CSCF (Proxy CSCF) controls A-BGF (border gateway access) flow, and thereby are replicated session call, i.e., the user's listening MS is implemented on an access gateway boundaries. P-CSCF在得到通过该P-CSCF接入到IMS域的用户的IMPU(IP Multimedia Public Identity,ms共有用户标识)信息时,根据nffu信息判断会话是否需要被监听。 The P-CSCF in the IMS to give access to the user domain by the P-CSCF IMPU (IP Multimedia Public Identity, ms a common user identification) information, the information is determined according to whether nffu session needs to be monitored. 当该用户需要监听时,P-CSCF通过该P-CSCF与SPDF (服务策略判决功能实体)之间的Gq'接口、SPDF和A-BGF之间的Ia接口控制A-BGF复制会话的媒体流到LEMF (Law Enforcement MonitoringFacility,合法监听设备)上,该LEMF用于设置、维护、控制所有监听事件。 When the user needs to listen, Ia between the P-CSCF Gq 'interfaces, SPDF, and between the A-BGF via the P-CSCF and the SPDF (Service Policy Decision Function entity) interface control A-BGF copy session media streams to the LEMF (Law Enforcement MonitoringFacility, lawful interception equipment), which is used to set LEMF, maintenance, control, monitor all events.

[0005] 在实现本发明过程中,发明人发现现有技术中至少存在如下问题: [0005] In implementing the present invention, the inventor finds at least the following problems in the prior art:

[0006] 现有技术中需要通过P-CSCF和SPDF之间的接口、SPDF和A-BGF之间的接口完成监听过程,而上述的接口并没有统一的标准,在对接时很困难。 [0006] The prior art procedure required to complete the listener through the interface between the interface, the SPDF and the A-BGF between the P-CSCF and the SPDF, and said interface, and there is no uniform standard, is difficult when docking. 而且当MS core上发生补充业务时,呼叫信令和媒体流并不经过原被叫用户所在的P-CSCF和A-BGF,使用被监听用户所属的P-CSCF控制A-BGF复制媒体进行监听便不能实现补充业务的监听。 And when the supplementary service occurs on the MS core, call signaling and media stream does not pass through P-CSCF and the A-BGF original called user is located, using the P-CSCF belongs to monitor user media control A-BGF replication listens We can not achieve supplementary monitor business. 当用户漫游到其它网络时,用户的接入控制由漫游网络的P-CSCF实现,而不是归属网络的P-CSCF,这样在归属网络中无法对漫游到其它网络的用户进行媒体监听。 When the user roams to another network, user access control is provided by the roaming network P-CSCF, instead of the home network P-CSCF, so that the user can not roam to another network listens for media in a home network.

[0007] 发明内容 [0007] SUMMARY OF THE INVENTION

[0008] 本发明实施例提供一种MS监听的实现方法、系统及装置,以在MS系统中对终端用户进行监听。 [0008] Example embodiments provide an implementation of the method of the present invention is listening MS, system and device, the end-user to listen to the MS system.

[0009] 为了达到上述目的,本发明实施例提出了一种MS监听的实现方法,包括: [0009] To achieve the above object, embodiments of the present invention proposes a method for implementing listening MS, comprising:

[0010] 为通讯方分配媒体锚定点; [0010] distributing media anchor point for the communication partners;

[0011] 在所述通讯方通过所述媒体锚定点通讯时,复制通讯内容,以完成对所述通讯内容的监听;[0012] 在所述为通讯方分配媒体锚定点之前,还包括:接收来自MS网元的通过媒体锚定请求消息发送的需要监听的通讯方的媒体信息,所述媒体锚定请求消息包括:呼叫外消息,所述呼叫外消息包括:会话初始化协议SIP消息中的呼叫外消息或非SIP消息的呼叫外消息。 When [0011] the communication party through the communications media anchor point, copy the contents of the communication, listen to the complete content of the communication; [0012] Before the communicating parties is allocated to the media anchor point, further comprising: receiving media from the MS by the anchor network element media information request message needs to listen to the communication party, the media request message anchor comprising: an outer call message, the call external message comprising: a call session initiation protocol SIP message non-call message to message SIP message.

[0013] 本发明实施例还提出了一种IP多媒体子系统MS监听的实现系统,包括: [0013] Example embodiments of the present invention also provides a system for implementing an IP multimedia subsystem listening MS, comprising:

[0014] 通讯内容监听触发功能CCTF,用于控制会话内容监听复制功能CC-IIF为通讯方分配媒体锚定点,并在所述通讯方通过所述媒体锚定点通讯时,控制所述CC-IIF复制通讯内容,以完成对所述通讯内容的监听; When the [0014] communication triggering the CCTF listening, listening for controlling the session content replication CC-IIF anchor point for communications media distribution side, and the communication party through the communications media anchor point, controlling the CC-IIF copy the content of communications, to finish listening to the content of communications;

[0015] CC-IIF,用于为通讯方分配媒体锚定点,并在所述通讯方通过所述媒体锚定点通讯时复制通讯内容所述系统还包括: [0015] CC-IIF, for dispensing the media anchor point for the communication partners, and copy the contents of the communication system by the communication party when the communication media anchor point further comprises:

[0016] IMS网元,用于通过媒体锚定请求消息将锚定的通讯方的媒体信息发送给所述CCTF ;所述媒体锚定请求消息包括:呼叫外消息,所述呼叫外消息包括:会话初始化协议SIP消息中的呼叫外消息或非SIP消息的呼叫外消息。 [0016] IMS network elements, through the media for anchoring the anchor request message sent correspond to the square of the CCTF information media; the media request message anchor comprising: an outer call message, the outer call message comprises: outer-call message call message session Initiation protocol SIP message or SIP message.

[0017] 本发明实施例还提出了一种IP多媒体子系统MS监听的实现装置,包括: [0017] Example embodiments of the present invention also provides an apparatus for implementing an IP multimedia subsystem listening MS, comprising:

[0018] 接收模块,用于接收来自MS网元的通过媒体锚定请求消息发送的需要监听的通讯方的媒体信息,所述媒体锚定请求消息包括:呼叫外消息,所述呼叫外消息包括:会话初始化协议SIP消息中的呼叫外消息或非SIP消息的呼叫外消息; [0018] The receiving module for receiving the media from the MS to the anchor network element media information request message to the communication party needs to listen to the media request message anchor comprising: an outer call message, a call message including an outer : call-call external message message session Initiation protocol SIP message or the SIP message;

[0019] 第一控制模块,用于控制会话内容监听复制功能CC-IIF为通讯方分配媒体锚定占. [0019] The first control module for controlling the session content monitor replication CC-IIF allocated for communications media accounted square anchor.

[0020] 第二控制模块,用于在所述通讯方通过所述媒体锚定点通讯时,控制所述CC-IIF复制通讯内容,以完成对所述通讯内容的IMS监听。 [0020] The second control module for the communication party when the communication media anchor point by controlling the CC-IIF copy the content of communications, to complete the IMS communication content monitor.

[0021] 本发明实施例还提出了一种IP多媒体子系统MS监听的实现装置,包括: [0021] Example embodiments of the present invention also provides an apparatus for implementing an IP multimedia subsystem listening MS, comprising:

[0022] 分配模块,用于为通讯方分配媒体锚定点,所述为通讯方分配媒体锚定点之前还包括接收来自頂S网元的通过媒体锚定请求消息发送的需要监听的通讯方的媒体信息,所述媒体锚定请求消息包括:呼叫外消息,所述呼叫外消息包括:会话初始化协议SIP消息中的呼叫外消息或非SIP消息的呼叫外消息; [0022] The allocation module, for distributing media anchor point for the communication partners, the distribution medium before the anchor point further includes a media receiver side through the communication medium anchor needs to listen to the request message sent from the top S of the communication network element side information the media request message anchor comprising: an outer call message, the outer call message comprising: a message-of-call message in a session Initiation protocol SIP or non-call message is a SIP message;

[0023] 复制模块,用于在所述通讯方通过所述媒体锚定点通讯时,复制通讯内容,以完成对所述通讯内容的頂S监听。 [0023] a copy module for the communication party when the communication media anchor point by copying the contents of the communication to complete the top of the S content monitor communications.

[0024] 与现有技术相比,本发明实施例具有以下优点: [0024] Compared with the prior art, embodiments of the present invention has the following advantages:

[0025] 通过使对通讯内容的监听可以在媒体锚定点上实现,而不是必须由现有媒体接入设备实现,从而实现了媒体在MS上的集中监听,保证采用各种方式接入MS的用户都可以在MS core上实现媒体的集中监听,对接入侧设备没有要求,而且不需要在MS core和接入侧设备之间采用扩展的私有接口。 [0025] By listening to the content of communications can be implemented in the media anchor point, rather than having to be implemented by existing media access device, thereby realizing a media concentrate on listening MS, the MS access to a variety of ways to ensure that the users may be implemented in the MS core centralized monitor media access side of the device is not required, and does not require extended use private interface between the MS core and the access devices.

[0026] 附图说明 [0026] BRIEF DESCRIPTION OF DRAWINGS

[0027] 为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动性的前提下,还可以根据这些附图获得其他的附图。 [0027] In order to more clearly illustrate the technical solutions in the embodiments or the prior art embodiment of the present invention, briefly introduced hereinafter, embodiments are described below in the accompanying drawings or described in the prior art needed to be used in describing the embodiments the drawings are only some embodiments of the present invention, those of ordinary skill in the art is concerned, without any creative effort, and can obtain other drawings based on these drawings.

[0028] 图I为本发明实施例一提出的一种MS监听的实现方法流程图;[0029] 图2为本发明实施例二提出的一种MS监听的实现方法流程图; [0028] Figure I embodiment of the present invention, a method for implementing a proposed embodiment listening MS flowchart; [0029] FIG 2 is a flowchart implementing a method according to a second listening MS forth embodiment of the invention;

[0030] 图3为本发明实施例三提出的一种MS监听的实现方法流程图; [0030] FIG. 3 MS listening implementing a method according to a third embodiment of the present invention set forth a flow diagram;

[0031] 图4为本发明实施例四提出的一种IMS监听的实现系统结构图; [0031] FIG. 4 structural diagram of a system for implementing IMS monitor according to a fourth embodiment of the present invention is set forth;

[0032] 图5为本发明实施例五提出的一种MS监听的实现装置结构图; [0032] FIG. 5 shows the structure of MS listening to implement a proposed according to a fifth embodiment of the present invention;

[0033] 图6为本发明实施例六提出的一种MS监听的实现装置结构图。 [0033] FIG. 6 MS structural diagram of a device for implementing the listener according to a sixth embodiment of the present invention proposed.

[0034] 具体实施方式 [0034] DETAILED DESCRIPTION

[0035] 下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。 [0035] below in conjunction with the present invention in the accompanying drawings, technical solutions of embodiments of the present invention are clearly and completely described, obviously, the described embodiments are merely part of embodiments of the present invention, but not all embodiments example. 基于本发明中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。 Based on the embodiments of the present invention, those of ordinary skill in the art to make all other embodiments without creative work obtained by, it falls within the scope of the present invention.

[0036] 本发明实施例一提出的一种IMS监听的实现方法,如图I所示,包括: [0036] IMS implementing a method according to a listening forth embodiment of the present invention, as shown in FIG. I, comprising:

[0037] 步骤SlOl,为通讯方分配媒体锚定点; [0037] Step SlOl, distributing media anchor point for the communication partners;

[0038] 步骤S102,在所述通讯方通过所述媒体锚定点通讯时,复制通讯内容,以完成对所述通讯内容的頂S监听。 [0038] step S102, the communication party through the communications media anchor point, copy the contents of the communication to complete the top of the S content monitor communications.

[0039] 具体的,本实施例中,该通讯方为通讯的双方或多方,在本发明的所有实施例中,该通讯方均以通讯双方为例。 [0039] Specifically, in this embodiment, the two or more parties to the communication party of communication, in all embodiments of the present invention, the communication side are communication parties for example.

[0040] 其中,上述的为通讯方分配媒体锚定点包括:控制会话内容监听复制功能CC-IIF为通讯方分配媒体锚定点;上述的复制通讯内容包括:控制该CC-IIF复制该通讯内容。 [0040] wherein said communication party distributing media as an anchor point comprising: a control session content monitor replication CC-IIF distribution media anchor point to communicating parties; said copy the content of communications comprising: controlling the CC-IIF copies the content of communications.

[0041] 在上述为通讯方分配媒体锚定点之前包括:接收来自MS网元的通过媒体锚定请求消息发送的需要监听的通讯方的媒体信息。 [0041] Prior to dispensing the media anchor point for the above-described communication party comprises: receiving side information and communication media through the media anchor request message sent from the MS needs to listen to the network element. 在上述为通讯方分配媒体锚定点之后包括:通过媒体锚定结果响应消息将为通讯方分配的媒体锚定点的结果发送给MS网元。 After the distribution medium side anchor point for communications comprising: a media anchor results response message results will assign communication media anchor point side transmits to the MS NE. 其中,该MS网元包括但不限于:S-CSCF、AS、MGCF、P-CSCF。 Wherein the MS network element include, without limitation: S-CSCF, AS, MGCF, P-CSCF. 该媒体锚定请求消息包括但不限于:呼叫内会话初始化协议SIP消息、呼叫外消息;该锚定结果响应消息包括但不限于:呼叫内会话初始化协议SIP消息、呼叫外消息;其中,该呼叫外消息包括但不限于:SIP消息中的呼叫外消息或非SIP消息的呼叫外消息;该SIP消息中的呼叫外消息包括但不限于INFO消息或MESSAGE消息;该非SIP消息的呼叫外消息包括但不限于Diameter消息。 The media anchor request message including but not limited to: the Call Session Initiation Protocol (SIP) message, the call external message; anchoring result of the response message include, but are not limited to: the Call Session Initiation Protocol (SIP) message, the call external message; wherein the call including but not limited to external message: SIP-call message or a call message in the SIP message outer message; call external message in the SIP message including but not limited to an INFO message or a mESSAGE message; non-call message to the SIP message comprises but not limited to Diameter message. 该呼叫内SIP消息包括但不限于直接将SIP会话消息作为锚定请求消息发给CCTF的消息。 Within the SIP call message including but not limited to the SIP session message directly as an anchor message Request message to the CCTF.

[0042] 此外,上述的通讯内容包括但不限于:语音通话内容、传真内容、MODEM内容、视频通话内容、数据交互内容。 [0042] Further, the communication including but not limited to: a voice call, the fax, MODEM content, video call content, interactive content data. 在上述的复制通讯内容之后还包括:CC-IIF将通讯内容发送给监听中心;该将通讯内容发送给监听中心包括但不限于:通过窄带电路连接在连接电路上复制该通讯内容的方式将该通讯内容发送给该监听中心;通过窄带电路连接向监听中心发起窄带呼叫的方式将该通讯内容发送给该监听中心;通过IP连接在该IP连接上复制该通讯内容的方式将该通讯内容发送给该监听中心;通过IP连接在该IP连接上发起SIP呼叫的方式将该通讯内容发送给该监听中心。 After the above copying of the contents of communication further comprises: CC-IIF sends the content to monitor the communication center; transmitting the contents to the communication include but are not limited to LEA: copying the circuit via the narrowband communication content on the way of connecting circuit the content of communications sent to the LEA; narrowband circuit mode connection is initiated to the interception center sends the calling narrowband communications content to the monitor center; sent via the IP connection to the IP communication connection to copy the contents of the communication mode content the LEA; IP connection via the IP connection to initiate a SIP call mode sends the contents of the communication to the LEA.

[0043] 可见,本实施例中,通过使对通讯内容的监听可以在媒体锚定点上实现,而不是必须由现有媒体接入设备实现,从而实现了媒体在MS上的集中监听,保证采用各种方式接入IMS的用户都可以在MS core上实现媒体的集中监听,对接入侧设备没有要求,而且不需要在MS core和接入侧设备之间采用扩展的私有接口。 [0043] it is seen that the present embodiment may be achieved by listening to the communication media content on the anchor point, rather than the conventional media must be implemented by the access device, thus realizing the listening on MS media concentration, to ensure use of users are various ways to access the IMS may be implemented in the MS core centralized monitor media access side of the device is not required, and does not require extended use private interface between the MS core and the access devices.

[0044] 进一步地,通过在MS core上增加CCTF模块和CC-IIF模块,实现媒体在MS上的集中监听,保证采用各种方式接入MS的用户都可以在MS core上实现媒体的集中监听。 [0044] Further, by increasing the module and the CC-IIF CCTF on MS module Core, listening on media concentration to achieve the MS, access a variety of ways to ensure that the user of the MS can be implemented in a centralized media listening MS Core . 而且新增的实现媒体流监听的模块CCTF、CC-IIF是核心网部件,只局限在MS core内部,不需要在MS core和接入侧设备之间采用扩展的私有接口。 And the new module for the media stream listening CCTF, CC-IIF is a core network component, confined within the MS core, need not be employed at the interface between the extended private access devices and the MS core.

[0045] 本发明实施例二提出的一种MS监听的实现方法,在MS网络架构中,包括CSCF、HSS (Home Subscriber Server,归属用户服务器)、AS (ApplicationServer,应用服务器)、MRFC(Multimedia Resource Control Function,多媒体资源控制功能实体)以及PDF (Po I icy Decision Function,策略判决功能实体)。 [0045] MS listens implementing a method according to a second embodiment of the present invention set forth in the MS network architecture, including CSCF, HSS (Home Subscriber Server, HSS), AS (ApplicationServer, an application server), MRFC (Multimedia Resource control function, multi-media resource control functional entity) and PDF (Po I icy decision function, policy decision functional entity). 上述的CSCF用于控制用户的注册和会话,HSS用于集中管理用户签约数据,AS用于提供各种业务逻辑控制功能。 CSCF for controlling the above-described user registration and session, HSS to centrally manage user subscription data, AS for providing various service logic control functions. 其中,CSCF 分为P-CSCF (Proxy-CSCF,代理CSCF) ,I-CSCF (Interrogating-CSCF,查询CSCF),S-CSCF (Serving-CSCF,服务CSCF),上述的P-CSCF、I-CSCF 和S-CSCF 在物理上可以合在一起形成功能模块,也可以分开分别为不同的功能模块,用户通过归属网络的P-CSCF接入到IMS ;归属网络的S-CSCF完成会话和业务的触发控制、以及与AS的业务控制交互;I-CSCF则用于路由的查询。 Wherein, CSCF is divided into P-CSCF (Proxy-CSCF, the proxy CSCF), I-CSCF (Interrogating-CSCF, a query CSCF), S-CSCF (Serving-CSCF, serving CSCF), the above-described P-CSCF, I-CSCF S-CSCF and may be bonded together to form physically functional modules may be separated into different functional modules respectively, through the user access to the home network to the IMS P-CSCF; home network S-CSCF triggers the session to complete and operational control and service control interaction with the AS; I-CSCF routes the query is used. P-CSCF是UE (User Equipment,用户设备)接入MS系统的入口,S-CSCF在IMS核心网中负责对UE的注册鉴权和会话控制,执行针对主叫端及被叫端IMS用户的基本会话路由功能,并根据用户签约的IMS触发规则,在条件满足时进行到AS的增值业务触发及业务控制交互。 P-CSCF is the UE (User Equipment, user equipment) access to the inlet system MS, S-CSCF is responsible for registration authentication and session control for the UE in the IMS core network, for execution of the user of the calling terminal and the called terminal is IMS basic session routing functions, and trigger rules based on user subscribed IMS, AS to carry out the trigger value-added services and service control interaction when conditions are met.

[0046] IMS网络架构分为接入互联层、会话控制层和应用层,其中,接入互联层可以完成各类SIP终端的SIP会话的发起和终结;实现IP的分组,并进行承载类型之间的转换;根据业务部署和会话层的控制实现QoS (Quality ofService,服务质量)策略;完成与PSTN (Public Service TelecommunicationNetwork,传统公共服务电信网)/PLMN (PublicLand Mobile Network,公共陆地移动通信网)间的互联互通,该接入互联层包括但不限于各类SIP终端、有线接入、无线接入、互联互通网关等设备。 [0046] IMS network architecture consists of the access network layer, session control and application layers, wherein the access various types of interconnect layers may be formed of a SIP terminal SIP session initiation and termination; implement the IP packet, and the type of the bearer conversion between; implement QoS (quality ofService, quality of service) policy under the control of service deployment and session layer; complete with PSTN (public service TelecommunicationNetwork, traditional public service telecommunications network) / PLMN (PublicLand mobile network, public land mobile network) interoperability between the access layer interconnect all kinds including but not limited to a SIP terminal, a wired access, wireless access, gateway equipment interoperability. 会话层可以完成基本会话的控制,完成用户注册、SIP会话路由控制,与应用服务器交互执行应用业务中的会话、维护管理用户数据、管理业务QoS策略等功能,与应用层一起为所有用户提供一致的业务环境。 Session layer can be done to control basic sessions, complete the user registration, SIP session routing control, and application server interaction execution application business sessions, maintenance and management of user data, manage business QoS policy and other functions, together with the application layer for all users with a consistent business environment.

[0047] 在MS系统中,SIP是MS的基本协议,为正在发展和不断研究中的协议,是多媒体通信系统框架协议,并且基于文本编码,可以完成多媒体的会话过程,用于建立、改变或者结束多媒体会话的应用层协议,与多媒体流协议配合,共同完成MS中的会话建立及媒体协商。 [0047] In the MS system, the SIP protocol is substantially the MS, is being developed and continue to study protocol, a multimedia communication system frame protocols, and text-based coding, multimedia session can be done, for establishing, changing or end application layer protocol multimedia sessions, and multimedia streaming protocols fit together to complete the MS in session establishment and media negotiation. 该頂S监听的实现方法如图2所示,包括: Implementation of the top S of the listener shown in Figure 2, comprising:

[0048]步骤 S201,在IMS core 上增加CCTF (Content of CommunicationTriggerFunction,通讯内容监听触发功能)模块和CC-IIF(Content ofcommunication Internal Intercept Function,会话内容监听触发功能)模块。 [0048] step S201, the increase CCTF (Content of CommunicationTriggerFunction, triggering monitor the content of communications) module and CC-IIF (Content ofcommunication Internal Intercept Function, session content monitor trigger function) module on the IMS core.

[0049] 具体的,该CCTF实现在MS Core上媒体集中监听的信令控制功能,该CC-IIF实现在MS Core上媒体集中监听的媒体复制功能,该CCTF可以将被监听会话的媒体锚定到IMS core的CC-IIF上,该CC-IIF可以复制被监听会话的媒体流到LIG (Lawful InterceptGateway,合法监听网关)上。 [0049] Specifically, the MS Core CCTF implemented on media concentration monitor control signaling, the CC-IIF implemented on MS Core media concentration monitor media copy function, which can be monitored CCTF media session anchored to the IMS core of the CC-IIF, the CC-IIF can be replicated flow of media listening session LIG (lawful InterceptGateway, LIG) on.

[0050] 步骤S202,在MS系统内建立会话时,需在建立会话之前,对会话双方进行会话的初始化,即通过SIP消息获取用户的媒体信息。 [0050] Step S202, the session is established within the MS system, prior to the need to establish a session, the session is initialized for both sessions, i.e., obtain the user's media information through an SIP message. 该媒体信息包括但不限于SDP (SessionDescription Protocol,会话描述协议)地址信息和监听对象信息。 This information includes but is not limited to media SDP (SessionDescription Protocol, Session Description Protocol) address information and the object information monitor.

[0051] 步骤S203,将监听目标设置到MS网元上,会话请求路由到监听目标归属网络的IMS网元时,IMS网元判断出本次会话需要被监听,将监控被监听会话的媒体协商过程。 When the [0051] step S203, the the intercept target is provided to the MS NE, the session request is routed to the IMS network interception target home network element, IMS network element is judged that the session needs to be monitored, the monitoring of the monitored session media negotiation process.

[0052] 具体的,该MS网元包括但不限于S-CSCF、P-CSCF, AS、MGCF(媒体网关控制功能),本实施例中,该MS网元以S-CSCF为例。 [0052] Specifically, the MS including but not limited to network element S-CSCF, P-CSCF, AS, MGCF (Media Gateway Control Function), in this embodiment, the MS NE to Case S-CSCF.

[0053] 步骤S204,S-CSCF将媒体协商操作的SDP地址信息和监听对象信息发送给CCTF。 [0053] Step S204, S-CSCF sends the SDP listener address information and the object information to the media negotiation operation CCTF.

[0054] 具体的,在初始化的时候,上述获取的SDP地址信息和监听对象信息将经过用户归属域的S-CSCF,当SDP地址信息和监听对象信息经过S-CSCF时,该S-CSCF通过媒体锚定请求消息将SDP地址信息和监听对象信息发送给CCTF。 [0054] Specifically, at initialization, the above-described acquired SDP address information and monitor the object information through the S-CSCF the user home domain, when the SDP address information and monitor subject information passes through the S-CSCF, the S-CSCF by media anchor request message transmits SDP listener object information and address information to the CCTF. 该媒体锚定请求消息包括但不限于:呼叫内的SIP消息和呼叫外的消息。 The anchor request message media include, but are not limited to: SIP message to message and call within the call. 该呼叫内的SIP消息包括但不限于呼叫内的Invite消息、reinvite消息、18X消息、2X X消息;该呼叫外消息包括但不限于呼叫外SIPINFO消息、SIP MESSAGE消息,该呼叫外INFO消息或MESSAGE消息是基于SIP协议的一种SIP消息、该呼叫外消息还可以为非SIP消息的呼叫外消息,该非SIP消息的呼叫外消息包括但不限于Diameter,比如可以是Diameter (下一代的AAA协议标准)的AAR(AA-Request, AA请求)消息和Diameter的AAA (AA-Answer, AA应答)消息、以及通过Diameter扩展AVP(Attribute-Length-Value, Diameter的基础协议中的属性值)将SDP信息、监听需要的用户信息、操作指示信息等内容实现的消息。 SIP message in the call include, but are not limited to the Invite message in a call, reINVITE message, 18X message, 2X X message; the call external message include, but are not limited to, a call outside SIPINFO message, SIP MESSAGE message, the call outside the INFO message or a MESSAGE SIP protocol message is based on a SIP message, the call message may also be an outer-call message is non-SIP message, the non-call message to the SIP message to a Diameter include, without limitation, may be for example a Diameter (the next generation of AAA protocol standard) AAR (AA-request, AA request) message, and the Diameter AAA (AA-answer, AA response) message, and by Diameter extended AVP (attribute-Length-value, the attribute value of the underlying protocol Diameter in) the SDP message information, the user information listening needs, the operation information indicating the content of implementation. 上述的SDP地址信息为通讯方的地址信息,通讯方通过该SDP地址信息进行通讯,该监听对象的信息包括但不限于监听需要的用户信息、操作指示信息、通话双方的地址信息。 SDP above address information address information of the communication party, the communication party address information by the SDP communication, information of the listening object information including but not limited to a user listening needs, operation instruction information, address information of the calling parties. 上述的SDP地址信息和监听对象信息可以存放在INFO或MESSAGE消息的扩展头域中,也可以打包成XML(eXtensible Markup Language,可扩展标记语言)格式填充到SIPbody (内部)。 Above SDP listener object information and address information may be stored in the INFO message or a MESSAGE extension header field may be packaged into XML (eXtensible Markup Language, extensible Markup Language) format filled SIPbody (internal). 该CCTF是MS实现媒体监听的一个功能模块,可以是一个单独的网元,也可以共存于MGCF(媒体网关控制功能)上或共存于S-CSCF上。 The CCTF is a functional block implementing media listening MS, may be a separate network element, may coexist in the MGCF (Media Gateway Control Function), or co-exist on the S-CSCF. 上述的呼叫内的SIP消息是指通过SIP消息将SDP地址信息和监听对象信息发送给CCTF的消息;呼叫外的消息是指另外通过消息将SDP地址信息和监听对象信息发送给CCTF的消息。 SIP message within the call refers to the address information and transmits SDP listener object information through a SIP message to the message CCTF; outside call message transmitting means further SDP listener object information and address information to the message by message CCTF. 本实施例中,上述的呼叫外消息为不受INVITE请求和To-Tag200响应路径限制的消息。 In this embodiment, the above message is a call from outside the INVITE request and response message To-Tag200 path restriction. 例如,INVITE请求加上相应的带有To-Tag200响应(或101-199临时响应)之间会创建对话(Dialog),该对话是一个持续一定时间的两个用户之间的端到端的SIP关系。 For example, the INVITE request is created with the corresponding dialog (Dialog) To-Tag200 between the response (or interim response 101-199), the dialogue between the two end users of a certain duration SIP relationship with . 当使用会话内消息时,该会话内消息需要按照该INVITE请求与相应的带有To-Tag200响应之间建立的路径进行传输,在对话中的SIP请求和响应,路由路径收均会受到对话的限制,而且会话内消息的头域内携带的规则也需要遵从该对话。 When using the session message, the message needs to request for the session transmission path established between the respective response with To-Tag200 According to the INVITE, SIP requests and responses in a dialog, the routing paths will be close dialogue restrictions, and the first region in the session message carried by the rules also require compliance with the dialogue. 而呼叫外消息则不会受到上述路径和头域内携带规则的限制,本实施例中,通过使用该呼叫外消息可以从INVITE请求与相应的带有To-Tag200响应之间建立的路径上的任意S-CSCF将通讯双方的SDP地址信息锚定给CCTF。 And the call message is not limited by the outer path and the above-described head carried within the rules, in this embodiment, the request may be any of the corresponding path is established between To-Tag200 with the response from the call by using the outer INVITE message the S-CSCF address information SDP communication between the two sides anchored to the CCTF.

[0055] 步骤S205,为会话双方分配监听的SDP地址端点。 [0055] step S205, the allocation for both listening session SDP address of the endpoint.

[0056] 具体的,该分配的SDP地址端点的SDP媒体格式与S-CSCF发送的SDP地址信息的媒体格式相同。 [0056] Specifically, the same media format SDP SDP address information address of the allocated endpoint SDP media format transmitted and S-CSCF. 该为会话双方分配监听的SDP地址端点的主体可以为CCTF为会话双方分配监听的SDP地址端点,也可以为CCTF控制CC-IIF为会话双方分配监听的SDP地址端点,本实施例中,以CCTF控制CC-IIF为会话双方分配监听的SDP地址端点为例进行说明。 The monitor for both sessions assigned SDP address of the endpoint body may CCTF for both sessions allocated listening SDP address of the endpoint, or may be CCTF control CC-IIF for both sessions allocated listening SDP address of the endpoint, in this embodiment, to CCTF CC-IIF for the session control both the distribution of SDP listening address of the endpoint as an example.

[0057] 步骤S206,CCTF将SDP地址端点信息作为锚定结果返回给S-CSCF。 [0057] Step S206, CCTF endpoint address information of the SDP to S-CSCF returned as a result of the anchor.

[0058] 步骤S207,S-CSCF根据新分配的SDP地址端点替换原有的SDP地址,完成监听的准备工作。 [0058] Step S207, S-CSCF SDP replace the original end address according to the newly allocated address SDP, to complete the preparation of the listener. [0059] 具体的,上述SDP地址端点为CCTF与会话双方分别交互时所使用的端点信息,例如,有甲乙两个用户,甲用户的SDP端点为A,乙用户的SDP端点为B,在初始化阶段,IMS网元可以将甲用户的SDP地址信息(地址信息端点A)通知乙用户,也会将乙用户的SDP地址信息(地址信息端点B)通知甲用户,在甲乙双方会话时,甲用户和乙用户根据双方的SDP信息直接进行会话,即根据原有的SDP地址进行会话。 [0059] Specifically, the above-described SDP information to the endpoint address of the endpoint session interaction with CCTF are both used, for example, there are two users A and B, the user A SDP endpoint A, the user B's terminal SDP is B, the initialization stage, the IMS network element may be a user a SDP address information (address information of the terminal a) notifies the user B, the SDP will address information (address information of the end point B) of user B notifies the user a, when both parties session, user a and user B directly based on SDP information of both sessions, a session that is based on the original SDP address. 当需要对甲乙双方的会话进行监听时,在初始化阶段,MS网元通过使用媒体锚定请求消息将甲用户的SDP地址信息通知CCTF,该CCTF控制CC-IIF为甲用户分配SDP地址端点,即为甲用户分配与甲用户会话的SDP地址信息(地址信息端点C),同样的,该CCTF还需控制CC-IIF为乙用户分配SDP地址端点,即为乙用户分配与乙用户会话的SDP地址信息(地址信息端点D),同时CC-IIF还需为端点C和端点D建立通话连接,在甲乙双方会话时,甲用户的端点A根据SDP地址信息与端点C进行语音(或数据)包交换,乙用户的端点B根据SDP地址信息与端点D进行语音(或数据)包交换,而端点C和端点D之间是建立了通话连接的,即在甲用户和乙用户之间建立了会话,即使用新分配的SDP地址端点替换的SDP地址,从而完成监听的准备工作。 When the need for a session of both parties to monitor, in the initialization phase, the MS NE by using the media anchor request message A user SDP address information notification CCTF, the CCTF control CC-IIF assigned SDP address endpoint A user, i.e., a user is assigned to the user a SDP session address information (address information of the terminal C), the same, the need to control the CC-IIF CCTF SDP address assigned user endpoint b, and b is the b user is assigned a user session SDP address information (address information endpoint D), while CC-IIF call connection must be established for the terminal C and terminal D, when both parties session, the user a's endpoint a voice (or data) in accordance with SDP packet-switched address information terminal C , user B's endpoint B voice (or data) in accordance with SDP packet-switched address information D with the endpoint, and endpoint between terminals C and D to establish a call connection, i.e., between user a and user B establish a session, that is, using the newly assigned address of the endpoint to replace SDP SDP address to complete the preparations for listening.

[0060] 步骤S208, IMS中的会话建立成功后,会话双方进行会话的语音(或数据)包交换要经过CCTF分配的SDP地址端点,此时,进行媒体复制,并将通话的内容传递给监听中心。 [0060] step S208, after the IMS session is successfully established, both voice conversation session (or data) address of the endpoint to packet switched SDP dispensed through CCTF, At this time, the media copy, transmission content and listening to the call center. 该进行媒体复制的主体可以为CCTF进行媒体复制,也可以为CCTF控制CC-IIF进行媒体复制,本实施例中,以CCTF控制CC-IIF进行媒体复制为例进行说明。 The body may be a media copy of CCTF copy media, the media may be performed as the copy control CC-IIF CCTF, in this embodiment, in order to control the CC-IIF CCTF media copy for example.

[0061] 具体的,会话经过S-CSCF的媒体协商操作中的SDP地址信息被替换为CC-IIF上申请的媒体端点的SDP地址信息。 [0061] Specifically, the address information of the media SDP session negotiation through the operation of the S-CSCF is replaced with the application is a CC-IIF SDP media endpoint address information. 主叫用户会将CC-IIF看作本次会话的被叫,被叫用户会将CC-IIF看作本次会话的主叫。 CC-IIF caller will be seen as this session called party, the called user will CC-IIF considered calling this session. 当媒体协商完成开始建立媒体流时,所有的会话媒体流通过CC-IIF建立。 When the media began to establish a media stream negotiation is completed, all session media streams established by CC-IIF. 此时CCTF控制CC-IIF实现主被叫媒体流接续的同时,复制媒体流到LIG或LEMF,实现媒体流的监听。 At this time, the control CCTF called CC-IIF achieve the main media stream while the connection, or the LEMF LIG copy media stream, media stream responsible for listening. 复制媒体流到LIG或LEMF的方式可以根据监听中心的要求采用不同的方式,具体包括但不限于通过窄带电路连接直接在连接电路上复制通讯内容的方式将通讯内容发送给监听中心;通过窄带电路连接向监听中心发起窄带呼叫的方式将通讯内容发送给监听中心;通过IP连接直接在IP连接上复制通讯内容的方式将通讯内容发送给监听中心;通过IP连接在IP连接上发起SIP呼叫的方式将通讯内容发送给监听中心。 Copy media stream LEMF LIG or methods can be used in different ways according to the requirements of the interception center, including but not limited to the content of communications sent to a central monitor communication connections copy content directly on the narrowband connection circuit circuit; narrowband circuit initiating a connection narrowband call to the LEA way to send the content of communications to monitor center; connection to copy the content of communications directly on the IP connection over IP sends the content of communications to monitor center; by IP connectivity over the IP connection is initiated way SIP call It will be sent to monitor the content of communications center.

[0062] 在上述进行会话的过程中,若通话过程中媒体发生了更新,例如,由通话过程转换成了传真过程,则CCTF只需控制监听网关将原来的双方的通话地址信息改变成传真的地址信息,则S-CSCF可以继续使用媒体锚定请求消息将媒体协商锚定到CCTF,由CCTF控制CC-IIF完成媒体复制。 [0062] During the above conversation, the media occurs if a call has been updated, for example, converted into a fax from the call process, the CCTF only control LIG will call both the original address information is changed to fax address information, the S-CSCF may continue to use the media anchoring media negotiation request message to the anchor CCTF, controlled by the CC-IIF CCTF complete media copy. 在本发明实施例中,该监听方法不仅适用于对会话的监听,还可以根据该监听方法监听传真内容、MODEM内容、视频通话内容、数据交互内容等各种通讯内容,只要用户之间的通话在MS域中是通过协商好的媒体进行交流的,都可以根据本实施例中的方法实现监听。 In an embodiment of the present invention, the method is applicable not only to a listener listening to the session may also listen to the listener method in accordance with the contents of the fax, MODEM content, video call, data communication, and other interactive content content, as long as the call between MS domain in the media to communicate through a negotiated, can be implemented according to the present embodiment monitor method.

[0063] 上述监听方法还可以适用于各种补充业务的监听,例如,在CFU监听(CallForwarding Unconditional,无条件呼叫前转)业务中,业务方可以签约CFU业务,t匕如乙签约CFU业务为呼叫前转到丙。 Listener [0063] The listener method is also applicable to a variety of supplementary services, e.g., CFU in listening (CallForwarding Unconditional, Call Forwarding Unconditional) service, the service party can CFU service subscription, t dagger acetate as a call service subscription CFU forwarded to C. 主叫方甲拨打业务方乙,则乙的S-CSCF将呼叫触发到乙的AS,AS发起新的SIP呼叫到丙,丙接受甲的呼叫,而乙并不会参与该通话,最终让甲丙两方通话。 A caller dials the business side B, then B's S-CSCF triggers the call to B's AS, AS launched a new SIP call to propionate, A call to accept, but B does not participate in the call, eventually armor propan two-party call. 如果业务方乙被监听,则乙的S-CSCF在触发呼叫到AS之前向CCTF发起锚定,而AS发起呼叫到丙的路径上不再发起锚定。 If the service is listening party B, B of the S-CSCF triggers the call to an AS prior to CCTF send an anchor, while the AS initiates the call is no longer sent to the path as an anchor prop. 之后所有的SDP交互都能够经过CCTF,而CCTF控制CC-IIF为两方分别分配SDP地址端点,CCTF控制CC-IIF为两方分别分配SDP地址端点的过程与步骤S204中分配SDP地址端点的过程相同,在此不再赘述。 After all the SDP interaction can be through CCTF, and CCTF control CC-IIF to both assigned SDP address of the endpoint, respectively, CCTF control CC-IIF to process the dispensing process both are assigned SDP address of the endpoint to the step S204 SDP address of the endpoint the same, are not repeated here. 会话建立成功后,通话双方的语音(或数据)交互都会经过CCTF上的SDP地址端点,CCTF可以控制监听网关进行媒体复制,并将通话的内容传递给监听中心。 After the session is established, the voice (or data) calls on both sides to interact through the SDP will address endpoint on the CCTF, CCTF can monitor control gateway media duplication, and passes the call to monitor the contents of the center. 上述的补充业务包括但不限于无条件前转、遇忙前转、无应答前转、呼叫等待、会议呼叫加入、拍叉转移。 The above-described supplementary services include, but are not limited to front Unconditional, Call Forward Busy forwarding, forwarding on no answer, call waiting, conference calling is added, hookflash transfer.

[0064] 可见,本实施例中,通过使对通讯内容的监听可以在媒体锚定点上实现,而不是必须由现有媒体接入设备实现,从而实现了媒体在頂S上的集中监听。 [0064] it is seen that the present embodiment may be achieved by listening to the communication media content on the anchor point, rather than the conventional media must be implemented by the access device, to realize media focused on the top S of the listening. 进一步地,通过在MScore上增加CCTF模块和CC-IIF模块,实现媒体在MS上的集中监听,保证采用各种方式接入頂S的用户都可以在MS core上实现媒体的集中监听。 Further, by increasing the module and the CC-IIF CCTF modules on MScore, listening media concentration achieved in the MS, in various ways to ensure concentration monitor the users access to the top S of media may be implemented in the MS core. 而且新增的实现媒体流监听的模块CCTF、CC-IIF是核心网部件,属于MS core实现合法监听的配套部件,保证了采用的私有接口只在頂S core内部,不需要在IMS core和接入侧设备之间采用扩展的私有接□。 And the new module for the media stream listening CCTF, CC-IIF is a core network component, belonging to the MS core member supporting lawful interception implemented to ensure that the private interface used only within the top S core, and need not access IMS core extended use of a private access □ between the device side.

[0065] 本发明实施例三提出的一种MS监听的实现方法,在本实施例中,以主叫用户A为监听目标,S-CSCF到CCTF之间采用会话外的Info消息交换SDP信息,本实施例中,S-CSCF和P-CSCF均为用户A归属地的S-CSCF和P-CSCF,CCTF和CC-IIF采用H. 248消息为例说明基本呼叫的监听流程,如图3所示,包括: [0065] MS listening implementing a method according to a third embodiment of the present invention proposed, in the present embodiment, the calling user A is to intercept target, S-CSCF to use between the outer CCTF Info message exchange session SDP information, in this embodiment, S-CSCF and P-CSCF are the user a of the home S-CSCF and P-CSCF, the CCTF and CC-IIF using H. 248 message indicating that the monitoring process as an example of the basic call, as shown in FIG 3 shown, comprising:

[0066] 步骤S301,用户A向用户A所属的P-CSCF发送会话请求消息,该消息中携带了用户A的SDP地址信息。 [0066] Step S301, P-CSCF the user A belongs, user A sends a session request message, and the message carries the SDP information of the user A's address.

[0067] 步骤S302,用户A所属的P-CSCF将会话请求消息转发给用户A所属的S-CSCF,该消息中携带了用户A的SDP地址信息。 [0067] Step S302, P-CSCF the user A belongs to the session request message to the S-CSCF the user A belongs, the message carries the address information of the user A SDP.

[0068] 步骤S303,S-CSCF通过会话外的Info消息将用户A的SDP地址信息发送给CCTF。 [0068] Step S303, S-CSCF sends to the outer CCTF Info message via SDP session address of user A's information.

[0069] 步骤S304,CCTF向CC-IIF发送申请媒体锚定点的SDP端点的请求消息。 [0069] Step S304, CCTF send a request to CC-IIF media anchor point an SDP request message endpoint.

[0070] 步骤S305,CC-IIF向CCTF返回响应消息,所述消息中携带了为用户A分配的媒体锚定点的SDP端点的地址信息。 [0070] Step S305, CC-IIF returns a response message to the CCTF, wherein the message carries address information assigned to the user A media anchor point SDP endpoint.

[0071] 步骤S306,CCTF将CC-IIF为用户A分配的SDP端点信息通过200消息发送给S-CSCF。 [0071] Step S306, CCTF the CC-IIF assigned to user A SDP endpoint information to S-CSCF 200 by the message.

[0072] 步骤S307,S-CSCF向AS发送会话请求消息,该消息中携带了CC-IIF为用户A分配的SDP端点信息。 [0072] Step S307, S-CSCF sends a session request message to the AS, the message carries the SDP information of CC-IIF end user A is assigned.

[0073] 步骤S308,AS向S-CSCF返回会话请求消息,该消息中可以携带CC-IIF为用户A分配的SDP端点信息,在本实施例中,AS不对上述的会话请求消息进行处理,即经过AS的会话请求消息不会发生变化。 [0073] Step S308, AS returns the S-CSCF session request message, the message may carry the SDP endpoint information CC-IIF user A allocated in the present embodiment, the AS does the above-described session request message is processed, i.e., AS it does not change after the session request message.

[0074] 步骤S309,S-CSCF向用户B发送会话请求消息,该消息中携带了CC-IIF为用户A分配的SDP端点信息。 [0074] Step S309, S-CSCF a request message to the user B sends a session, the SDP message carries the endpoint information for the user A CC-IIF assigned.

[0075] 步骤S310,用户B向S-CSCF返回183临时响应消息,该消息中携带了了用户B的SDP地址信息。 [0075] step S310, the user B to the S-CSCF 183 returns a temporary response message, the message carries the address information of the user B's SDP.

[0076] 步骤S311,S-CSCF向AS发送183临时响应消息,该消息中携带了用户B的SDP地 [0076] Step S311, S-CSCF 183 transmits a provisional response message to the AS, the message carries the SDP to user B

址信息。 Address information.

[0077] 步骤S312,AS向S-CSCF返回183临时响应消息,同样的,该消息中可以携带了用户B的SDP地址信息,在本实施例中,AS不对上述的183临时响应消息进行处理,即经过AS的183临时响应消息不会发生变化。 [0077] Step S312, AS returns to the S-CSCF 183 temporary response message, the same, the message may carry the SDP address information of the user B, in this embodiment, AS 183 temporary not respond to the above-described message processing, That message will not change after AS 183 temporary response.

[0078] 步骤S313,S-CSCF通过会话外的Info消息将用户B的SDP地址信息发送给CCTF。 [0078] Step S313, S-CSCF sends the SDP information to the address of the user B through the CCTF Info message outside the session.

[0079] 步骤S314,CCTF向CC-IIF发送申请SDP端点的请求消息。 [0079] Step S314, CCTF send SDP application request message to the endpoint CC-IIF.

[0080] 步骤S315,CC-IIF向CCTF返回响应消息,所述消息中携带了为用户B分配的SDP端点的地址信息。 [0080] Step S315, CC-IIF returns a response message to the CCTF, wherein the message carries the SDP information of the endpoint address allocated to user B's.

[0081] 步骤S316,CCTF将CC-IIF为用户B分配的SDP端点信息通过200消息发送给S-CSCF。 [0081] Step S316, CCTF the SDP endpoints CC-IIF information allocated to user B transmits to S-CSCF 200 by the message.

[0082] 步骤S317,S-CSCF向P-CSCF发送183临时响应消息,该消息中携带了了CC-IIF为用户B分配的SDP端点的地址信息。 [0082] Step S317, S-CSCF P-CSCF 183 sends a temporary response message, and the message carries the SDP information of the endpoint address CC-IIF allocated to user B's.

[0083] 步骤S318,P-CSCF向用户A发送183临时响应消息,该消息中携带了了CC-IIF为用户B分配的SDP端点的地址信息。 [0083] Step S318, P-CSCF the user A 183 sends a temporary response message, and the message carries the SDP information of the endpoint address CC-IIF allocated to user B's.

[0084] 步骤S319,用户A向用户B发送创建对话的200请求消息。 [0084] Step S319, User A sends to User B 200 creates the session request message.

[0085] 步骤S320,用户B向S-CSCF发送200会话请求消息。 [0085] step S320, the user B 200 transmits a session request message to the S-CSCF.

[0086] 步骤S321,S-CSCF向AS发送200会话请求消息。 [0086] Step S321, S-CSCF 200 transmits a session request message to the AS.

[0087] 步骤S322,AS向S-CSCF返回200会话请求消息。 [0087] Step S322, AS 200 returns a session request message to the S-CSCF.

[0088] 步骤S323,S-CSCF通过会话外的Info消息将开始媒体复制的信息发送给CCTF。 [0088] Step S323, S-CSCF through the outer Info message session starts sending information to the media copy CCTF.

[0089] 步骤S324,CCTF向CC-IIF发送媒体复制的请求消息。 [0089] Step S324, CCTF sends a request message to the media copy CC-IIF.

[0090] 步骤S325,CC-IIF对媒体复制,并将复制的内容发送给LIGL或EMF。 [0090] Step S325, CC-IIF copy of the media, and sends the copied content to LIGL or EMF.

[0091] 步骤S326,CC-IIF向CCTF返回媒体已复制的消息。 [0091] Step S326, CC-IIF returns the message to the media is copied CCTF.

[0092]步骤 S327,CCTF 向S-CSCF 发送200 消息。 [0092] Step S327, CCTF sending message 200 to the S-CSCF.

[0093] 步骤S328,S-CSCF向P-CSCF发送200请求消息。 [0093] Step S328, S-CSCF 200 transmits a request message to the P-CSCF.

[0094] 步骤S329,P-CSCF向用户A发送200请求消息。 [0094] Step S329, P-CSCF 200 transmits a request message to the user A.

[0095] 步骤S330,用户A向用户B发送响应消息。 [0095] step S330, the user A sends a response message to the user B.

[0096] 步骤S331,用户A向P-CSCF发送结束消息。 [0096] Step S331, the user A sends a message to the P-CSCF end.

[0097] 步骤S332,P-CSCF向S-CSCF发送结束消息。 [0097] Step S332, P-CSCF to the S-CSCF transmits an end message.

[0098] 步骤S333,S-CSCF向AS发送结束消息。 [0098] Step S333, S-CSCF transmits an end message to the AS.

[0099] 步骤S334,AS向S-CSCF发送结束消息。 [0099] Step S334, AS S-CSCF sends a complete message.

[0100] 步骤S335,S-CSCF向用户B发送结束消息。 [0100] Step S335, S-CSCF transmits a message to the user B ends.

[0101] 步骤S336,用户B向用户A发送200结束响应。 [0101] Step S336, the user B sends the response to user A 200 ends.

[0102] 可见,本实施例中,通过使对通讯内容的监听可以在媒体锚定点上实现,而不是必须由现有媒体接入设备实现,从而实现了媒体在頂S上的集中监听。 [0102] it is seen that the present embodiment may be achieved by listening to the communication media content on the anchor point, rather than the conventional media must be implemented by the access device, to realize media focused on the top S of the listening. 进一步地,通过在MScore上增加CCTF模块和CC-IIF模块,实现媒体在MS上的集中监听,保证采用各种方式接入頂S的用户都可以在MS core上实现媒体的集中监听。 Further, by increasing the module and the CC-IIF CCTF modules on MScore, listening media concentration achieved in the MS, in various ways to ensure concentration monitor the users access to the top S of media may be implemented in the MS core. 而且新增的实现媒体流监听的模块CCTF、CC-IIF是核心网部件,属于MS core实现合法监听的配套部件,保证了采用的私有接口只在頂S core内部,不需要在IMS core和接入侧设备之间采用扩展的私有接口。 And the new module for the media stream listening CCTF, CC-IIF is a core network component, belonging to the MS core member supporting lawful interception implemented to ensure that the private interface used only within the top S core, and need not access IMS core private use of the interface between the expansion device side. 通过使用S-CSCF锚定媒体信息给CCTF,使得当发生补充业务时,也可以实现补充业务的媒体监听。 S-CSCF by using the media information to the CCTF anchor, such that occurs when the supplementary service, the supplementary service may be implemented media monitoring. MS的所有业务都在归属网络的S-CSCF集中触发,保证了所有用户在归属网络集中实现媒体流的监听。 All operations are concentrated triggered MS home network S-CSCF, to ensure that the user listens to all centralized implementation of the media stream in the home network.

[0103] 本发明实施例四提出的一种MS监听的实现系统,如图4所示,包括:[0104] IMS网元41,用于通过媒体锚定请求消息将锚定的通讯方的媒体信息发送给CCTF [0103] A listening MS according to a fourth embodiment of the proposed system for implementing the present invention, shown in Figure 4, comprising: [0104] IMS network element 41, through the media for anchoring the anchor request message correspondent party media information sent to the CCTF

42。 42. 该MS网元41包括但不限于服务呼叫会话控制功能S-CSCF ;应用服务器AS ;媒体网关控制功能MGCF ;代理呼叫会话控制功能P-CSCF。 The MS network element 41 including but not limited to serving call session control function S-CSCF; the AS application server; the MGCF Media Gateway Control Function; proxy call session control function P-CSCF.

[0105] CCTF 42,用于控制CC-IIF 43为通讯方分配媒体锚定点,并在该通讯方通过该媒体锚定点通讯时,控制该CC-IIF 43复制通讯内容,以完成对该通讯内容的MS监听; [0105] CCTF 42, CC-IIF 43 for controlling communication party media distribution as anchor points and anchor point through the communication medium, controlling the CC-IIF 43 correspond to copy the contents of the communication party in order to complete the communication of the content the MS listens;

[0106] CC-IIF 43,用于为通讯方分配媒体锚定点信息,并在该通讯方通过该媒体锚定点通讯时复制通讯内容。 [0106] CC-IIF 43, for dispensing the media anchor point information of communication partners, and copy the contents of the communication party when the communication via the communication media anchor point.

[0107] 可见,本实施例中,通过在MS core上增加CCTF模块和CC-IIF模块,实现媒体在IMS上的集中监听,保证采用各种方式接入IMS的用户都可以在IMS core上实现媒体的集中监听,对接入侧设备没有要求。 [0107] seen, in this embodiment, by increasing the module and the CC-IIF CCTF modules on MS core, to realize the media concentrate on listening the IMS, in various ways to ensure that users access the IMS may be implemented in the IMS core centralized monitor media access side of the device is not required. 而且新增的实现媒体流监听的模块CCTF、CC-IIF是核心网部件,属于IMS core实现合法监听的配套部件,不需要在IMS core和接入侧设备之间采用扩展的私有接口。 And the new media stream to achieve listening module CCTF, CC-IIF is a core network component, belonging to the IMS core member supporting lawful interception implemented, extended private interface need not be employed between the IMS core and the access devices.

[0108] 本发明实施例五提出的一种MS监听的实现装置,该装置为CCTF,如图5所示,包括: [0108] MS realize an apparatus according to the fifth embodiment of the present invention proposed listening, the device is the CCTF, shown in Figure 5, comprising:

[0109] 接收模块51,用于接收来自MS网元的通过媒体锚定请求消息发送的需要监听的通讯方的媒体信息。 [0109] a receiving module 51, configured to receive media information communication party through the media anchor request message sent from the MS needs to listen to the network element.

[0110] 第一控制模块52,用于根据接收模块51接收的媒体信息控制CC-IIF为通讯方分配媒体锚定点; [0110] The first control module 52, a CC-IIF communication medium is allocated based on the reception side module 51 receives the media information control anchor point;

[0111] 第二控制模块53,用于在该通讯方通过第一控制模块52控制CC-IIF为通讯方分配媒体锚定点时,控制该CC-IIF复制通讯内容,以完成对该通讯内容的MS监听。 [0111] The second control module 53, 52 for controlling CC-IIF allocation when the media anchor point, controlling the CC-IIF communicating parties to copy the content of communications in the communication party by a first control module to complete the communication of the content of MS monitoring.

[0112] 可见,本实施例中,通过在MS core上增加CCTF模块和CC-IIF模块,实现媒体在IMS上的集中监听,保证采用各种方式接入IMS的用户都可以在IMS core上实现媒体的集中监听,对接入侧设备没有要求。 [0112] seen, in this embodiment, by increasing the module and the CC-IIF CCTF modules on MS core, to realize the media concentrate on listening the IMS, in various ways to ensure that users access the IMS may be implemented in the IMS core centralized monitor media access side of the device is not required. 而且新增的实现媒体流监听的模块CCTF、CC-IIF是核心网部件,属于IMS core实现合法监听的配套部件,不需要在IMS core和接入侧设备之间采用扩展的私有接口。 And the new media stream to achieve listening module CCTF, CC-IIF is a core network component, belonging to the IMS core member supporting lawful interception implemented, extended private interface need not be employed between the IMS core and the access devices.

[0113] 本发明实施例六提出的一种MS监听的实现装置,该装置为CC-IIF,如图6所示,包括: [0113] MS realize an apparatus according to a sixth embodiment of the present invention proposes a monitor, the apparatus for the CC-IIF, shown in Figure 6, comprising:

[0114] 分配模块61,用于为通讯方分配媒体锚定点; [0114] allocation module 61, for dispensing the media anchor point for the communication partners;

[0115] 复制模块62,用于在该通讯方通过分配模块61分配的媒体锚定点通讯时,复制通讯内容,以完成对所述通讯内容的监听。 [0115] Copy module 62, when the anchor point for the media communication via the communication party assigned allocation module 61, copy the contents of the communication, listen to the complete content of the communication.

[0116] 发送模块63,用于将复制模块62复制的通讯内容发送给监听中心,该监听中心包括但不限于LIG或LEMF。 [0116] The sending module 63, configured to copy the contents of the communication module 62 transmits to the copy LEA, which includes but not limited to central monitor LIG or LEMF. 将通讯内容发送给监听中心包括但不限于:通过窄带电路连接直接在连接电路上复制通讯内容的方式将通讯内容发送给监听中心;通过窄带电路连接向监听中心发起窄带呼叫的方式将通讯内容发送给监听中心;通过IP连接直接在IP连接上复制通讯内容的方式将通讯内容发送给监听中心;通过IP连接在IP连接上发起SIP呼叫的方式将通讯内容发送给监听中心。 The content of communications sent to the LEA include, but are not limited to: send communication contents to the LEA connection to copy the content of communications directly on the connection circuit narrowband circuit; initiating a connection narrowband call to the interception center narrowband circuit way communication content transmission to monitor center; by direct IP connection IP connection on the way to copy the content of communications will be sent to monitor the content of communications center; IP connection is initiated by way of SIP call over an IP connection will be sent to monitor the content of communications center.

[0117] 可见,本实施例中,通过在MS core上增加CCTF模块和CC-IIF模块,实现媒体在IMS上的集中监听,保证采用各种方式接入IMS的用户都可以在IMS core上实现媒体的集中监听。 [0117] seen, in this embodiment, by increasing the module and the CC-IIF CCTF modules on MS core, to realize the media concentrate on listening the IMS, in various ways to ensure that users access the IMS may be implemented in the IMS core the media focus on listening. 而且新增的实现媒体流监听的模块CCTF、CC-IIF是核心网部件,属于MS core实现合法监听的配套部件,不需要在IMScore和接入侧设备之间采用扩展的私有接口。 And the new media stream to achieve listening module CCTF, CC-IIF is a core network component, belonging to the MS core member supporting lawful interception implemented, need not be employed between the extended IMScore private interface and access devices.

[0118] 通过以上的实施方式的描述,本领域的技术人员可以清楚地了解到本发明可以通过硬件实现,也可以可借助软件加必要的通用硬件平台的方式来实现。 [0118] By the above described embodiments, those skilled in the art can understand that the present invention may be implemented by hardware, it may also be implemented by software plus a necessary universal hardware platform. 基于这样的理解,本发明的技术方案可以以软件产品的形式体现出来,该软件产品可以存储在一个非易失性存储介质(可以是⑶-ROM,U盘,移动硬盘等)中,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)执行本发明各个实施例所述的方法。 Based on such understanding, the technical solutions of the present invention may be embodied in a software product out, the software product may be stored in a nonvolatile storage medium (which may be ⑶-ROM, U disk, mobile hard disk), and includes several instructions that enable a computer device (may be a personal computer, a server, or network device) to execute the methods according to embodiments of the present invention.

[0119] 以上所述仅是本发明的优选实施方式,应当指出,对于本技术领域的普通技术人员来说,在不脱离本发明原理的前提下,还可以做出若干改进和润饰,这些改进和润饰也应视本发明的保护范围。 [0119] The above are only preferred embodiments of the present invention, it should be noted that those of ordinary skill in the art, in the present invention without departing from the principles of the premise, can make various improvements and modifications, such modifications and modifications should also depend on the scope of the present invention.

Claims (11)

1. 一种IP多媒体子系统IMS监听的实现方法,其特征在于,包括: 为通讯方分配媒体锚定点; 在所述通讯方通过所述媒体锚定点通讯时,复制通讯内容,以完成对所述通讯内容的监听; 在所述为通讯方分配媒体锚定点之前,还包括:接收来自MS网元的通过媒体锚定请求消息发送的需要监听的通讯方的媒体信息,所述媒体锚定请求消息包括:呼叫外消息,所述呼叫外消息包括:会话初始化协议SIP消息中的呼叫外消息或非SIP消息的呼叫外消息。 CLAIMS 1. A method implemented in an IP Multimedia Subsystem, IMS monitor, characterized by comprising: assigning a media anchor point for the communication party; when the communication party through the communications media anchor point, copy the contents of the communication to complete the monitor said communication content; prior to dispensing the media anchor point to the communication party, further comprising: receiving from the MS through the media anchor network element media information request message sent by the communication party needs to monitor the media request anchor message comprising: a message-of-call, the call external message comprising: a message-of-call message in a session Initiation protocol SIP or non-call message SIP message.
2.如权利要求I所述的方法,其特征在于,所述为通讯方分配媒体锚定点包括:控制会话内容监听复制功能CC-IIF为通讯方分配媒体锚定点; 所述复制通讯内容包括:控制所述CC-IIF复制所述通讯内容。 2. The method of claim I, wherein said allocated communication medium media anchor point comprising: a control session content monitor CC-IIF replication distributing media anchor point for the communication partners; copy the content of communications comprising: CC-IIF controlling the copying of the content of communications.
3.如权利要求I所述的方法,其特征在于,在所述为通讯方分配媒体锚定点之后,还包括: 通过媒体锚定结果响应消息将为通讯方分配的媒体锚定点发送给MS网元。 3. The method of claim I, wherein the media dispensing point to the anchor after the communication party, further comprising: a media anchor results response message allocated for the communication party to the MS media anchor point network yuan.
4.如权利要求I或3所述的方法,其特征在于,所述IMS网元包括以下中的一种或几种: 服务呼叫会话控制功能S-CSCF ; 应用服务器AS; 媒体网关控制功能MGCF ; 代理呼叫会话控制功能P-CSCF。 4. The method of claim I or claim 3, wherein, the IMS network element comprises one or more of the following: a serving call session control function S-CSCF; the AS application server; media gateway control function MGCF ; proxy call session control function P-CSCF.
5.如权利要求3所述的方法,其特征在于,锚定结果响应消息包括:呼叫外消息; 所述呼叫外消息包括:SIP消息中的呼叫外消息或非SIP消息的呼叫外消息;所述SIP消息中的呼叫外消息包括INFO消息或MESSAGE消息;所述非SIP消息的呼叫外消息包括Diameter 消息。 5. The method according to claim 3, wherein the results response message to the anchor comprising: an outer call message; the outer call message comprising: an outer call message in the SIP message or a call message outer SIP message; the said outer call message comprises a SIP INFO message or a mESSAGE message message; non-call message to the SIP message comprises a Diameter message.
6.如权利要求I所述的方法,其特征在于,所述通讯内容包括:语音通话内容、传真内容、MODHM内容、视频通话内容、数据交互内容中的一种或多种。 The method of claim I as claimed in claim 6, wherein the content of communications comprising: a voice call, the fax, MODHM content, video call content, interactive content data of one or more.
7.如权利要求2所述的方法,其特征在于,在所述复制通讯内容之后,还包括: 所述CC-IIF将所述通讯内容发送给监听中心; 所述将通讯内容发送给监听中心包括以下中的一种或几种: 通过窄带电路连接在连接电路上复制所述通讯内容的方式将所述通讯内容发送给所述监听中心; 通过窄带电路连接向监听中心发起窄带呼叫的方式将所述通讯内容发送给所述监听中心; 通过IP连接在所述IP连接上复制所述通讯内容的方式将所述通讯内容发送给所述监听中心; 通过IP连接在所述IP连接上发起SIP呼叫的方式将所述通讯内容发送给所述监听中心。 7. The method according to claim 2, characterized in that, after copying the contents of communication, further comprising: the CC-IIF sends the content to monitor communications center; transmitting the contents correspond to the LEA comprising one or more of the following: the link copy content on the communications circuit is connected via the narrowband circuit mode communication content to the LEA; connected call to initiate narrowband circuit LEA will narrowband the communication content to the LEA; IP via an IP connection in the connection mode of the communication on the copy content to transmit the content to the communication LEA; IP via an IP connection connected to the originating SIP sending the system call to the communication content to the LEA.
8. 一种IP多媒体子系统IMS监听的实现系统,其特征在于,包括: 通讯内容监听触发功能CCTF,用于控制会话内容监听复制功能CC-IIF为通讯方分配媒体锚定点,并在所述通讯方通过所述媒体锚定点通讯时,控制所述CC-IIF复制通讯内容,以完成对所述通讯内容的监听; CC-IIF,用于为通讯方分配媒体锚定点,并在所述通讯方通过所述媒体锚定点通讯时复制通讯内容; 所述系统还包括: IMS网元,用于通过媒体锚定请求消息将锚定的通讯方的媒体信息发送给所述CCTF ;所述媒体锚定请求消息包括:呼叫外消息,所述呼叫外消息包括:会话初始化协议SIP消息中的呼叫外消息或非SIP消息的呼叫外消息。 An IP Multimedia Subsystem, IMS monitor implementation system comprising: triggering the CCTF monitor the content of communications, the session content monitor for controlling replication CC-IIF anchor point for communications media distribution side, and in the communication party through the communications media anchor point, controlling the CC-IIF copy the content of communications, to monitor the communication complete content; CC-IIF, for dispensing the media anchor point for the communication partners, and the communications copy the contents of communication party through the communication media anchor point; the system further comprising: IMS network elements, through the media for anchoring the anchor request message sent correspond to the information side of the CCTF media; the media anchor a given request message comprising: a message-of-call, the call external message comprising: a message-of-call message in a session Initiation protocol SIP or non-call message SIP message.
9. 一种IP多媒体子系统IMS监听的实现装置,其特征在于,包括: 接收模块,用于接收来自MS网元的通过媒体锚定请求消息发送的需要监听的通讯方的媒体信息,所述媒体锚定请求消息包括:呼叫外消息,所述呼叫外消息包括:会话初始化协议SIP消息中的呼叫外消息或非SIP消息的呼叫外消息; 第一控制模块,用于控制会话内容监听复制功能CC-IIF为通讯方分配媒体锚定点; 第二控制模块,用于在所述通讯方通过所述媒体锚定点通讯时,控制所述CC-IIF复制通讯内容,以完成对所述通讯内容的监听。 A device for implementing IP Multimedia Subsystem, IMS monitor, characterized in that, comprising: a receiving module for receiving the media from the MS to the anchor network element media information request message sent by the communication party needs to monitor the media anchor request message comprising: a message-of-call, the call external message comprising: a message-call-call message session Initiation protocol SIP message or the SIP message; a first control module for controlling the session content monitor replication CC-IIF anchor point for communications media distribution side; and a second control module for the communication party when the anchor point through the communication medium, copying control of the communication content CC-IIF, to complete the communication content monitor.
10. 一种IP多媒体子系统IMS监听的实现装置,其特征在于,包括: 分配模块,用于当CCTF接收来自MS网元的通过媒体锚定请求消息发送的需要监听的通讯方的媒体信息后,为通讯方分配媒体锚定点,所述媒体锚定请求消息包括:呼叫外消息,所述呼叫外消息包括:会话初始化协议SIP消息中的呼叫外消息或非SIP消息的呼叫外消息; 复制模块,用于在所述通讯方通过所述媒体锚定点通讯时,复制通讯内容,以完成对所述通讯内容的监听。 10. An apparatus for implementing IP Multimedia Subsystem, IMS monitor, characterized in that, comprising: allocating module, configured to, when the media information received from the MS through the media CCTF anchor network element needs to listen request message sent by the communication party , communication media anchor point for the distribution side, the media request message anchor comprising: an outer call message, the outer call message comprising: a message-call-call message session Initiation protocol SIP message or the SIP message; copy module , when used in the party communication via said communication media anchor point, copy the contents of the communication, listen to the complete content of the communication.
11.如权利要求10所述的装置,其特征在于,还包括: 发送模块,用于将所述通讯内容发送给监听中心。 11. The apparatus according to claim 10, characterized in that, further comprising: transmitting means for transmitting the content to the communication LEA.
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